Review Tires (that you use) - Page 2 - Fiberglass RV


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Old 07-17-2012, 05:34 PM   #15
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Name: RogerDat
Trailer: 77 Scamp 13
Michigan
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This link to Discount Tire site has a good chunk of information on factors that impact tire life, load capacity etc. includes some stuff on storage and maint. Page is from tire seller, and is focused on purchase of ST tires but there is good general information and some specific mention to matching LT tires to axle load capacity.

A better written much more complete version of what I mentioned in OP plus other good stuff.
Separation Anxiety - Discount Tire Direct

BTW George good info in that service bulletin link. Thanks. And thanks to all the folks that are providing this helpful feedback.
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Old 07-17-2012, 06:26 PM   #16
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Name: Jack
Trailer: '98 BURRO 17WB
Delaware
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Norm, I think you've multiplied the individual wgt. rating of your 185s incorrectly. I get 1480X2=2960 rather than 3960 and your stated trailer wgt. amounting to 75% of tire load capacity.

As you definitely use your trailer and "exercise" your tires and yet have no blowouts with Marathons, I wonder if "use it or lose it" applies particularly to this brand.

jack
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Old 07-17-2012, 07:16 PM   #17
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Name: Norm and Ginny
Trailer: Scamp 16
Florida
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Jack, Thanks for the math correction, I fixed it in the post.

I've often wondered about 'exercised tires' versus 'sitting tires'. Our tires are regularly exercised and rarely sit for more than a month and this year rolling 11 of 12 months.

As well we don't beat our tires up to much driving at rather low slow cool speeds.
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Old 07-17-2012, 08:20 PM   #18
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Name: george
Trailer: FunFinder
Missouri
Posts: 455
  • Brand Model and Size of tire.
Freestar 205/75-14
  • Cost per tire (approx)
approx $85 mail order including shipping
  • General driving speed you use the tire at.
55 to 60 mph
  • Load Range
C
  • Air pressure typically run at. And max pressure if known.
50 psi/50 psi
  • How many miles typically put on the tire per year.
I've had the trailer 9 months, have used it about 5K miles
  • What kind of trailer including size and approx weight. Single or double axle
Funfinder, 19' 3800 pounds, double axle
  • How many miles you have used tire you are reviewing.
Approx 5K miles
  • How you would rate the tire 1-5 stars, poor to great, what ever floats your boat.
I have to give them 5 stars. They have worked fine. No failures
and they have been run on over 100 degree days on the interstate,
on cold winter days, in the rain, on dirt roads, rock roads and gravel.

Having said all that, my plan is to replace them sometime fairly soon because I want to run LR D tires, with 60 to 65 psi in them. Even though my current Freestar tires are only loaded to about 48% of their load carry capacity, I want even more margin for safety, and I feel that LR D tires at a higher pressure will give me that and likely even cooler running temps.
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Old 07-17-2012, 10:09 PM   #19
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Name: Rob
Trailer: Casita
Kansas
Posts: 81
Registry
Brand Model and Size of tire:
Maxxis M8008 ST225/75 R15 10ply.

Rated load two tires:
5,660

Percent of load used:
60%

Cost per tire (approx): $155 to $190

General driving speed you use the tire at:
65 mph (okay , really up to 72 mph when I get excited and I am close to a desired destination and the road and weather permits safe travel)

Load Range: "E"

Air pressure typically run a:
75 to 80 psi

Max pressure:
80 psi

How many miles typically put on the tire per year"
13,000

What kind of trailer including size and approx weight
2007 17 Casita SD, 3,400 lbs

Single or double axle:
Single

How many miles you have used tire you are reviewing:
40,000. I replaced the first set at 32,000 and have 8,000 miles on second set.
My old tires looked almost as good as my new tires when I retired them.

How you would rate the tire 1-5 stars, poor to great, what ever floats your boat
GREAT, *****

Thoughts:
1) Run trailer tires at max psi. They run cooler and carry loads encountered better. Better ride not important to me, I ride in the truck.
2) My trailer likes the back country with gravel roads and washboards. I take it slow and my Maxxis tires have never failed me.
3) Maxxis Tech support told me the same thing the Marathon SB said about adding another 10 psi if running faster than 65 mph. I keep mine at about 80 psi since I am not close to rated load.
4) With trailer tires strength deteriorating based on cycles, it is important that you have load rated tires that greatly exceeds trailer weight.
5) The static weight of the trailer is much less than the dynamic loads encountered as your trailer bounces down the road. There is no penalty for using a higher load rated tire except for a small increase in cost for the additional margin. How much is that extra cost worth when have a blown tire on I-405 in Seattle at 5:00PM?
6) Forget everything you know about passenger tires. How much tread you have left on your trailer tire means little. It is time and cycles you need to be concerned about on trailer tires.
7) I use a TPMS to monitor tire psi and temp which greatly reduces tire separation anxiety.
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Old 07-18-2012, 04:55 PM   #20
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Name: RogerDat
Trailer: 77 Scamp 13
Michigan
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Quote:
Originally Posted by baron100 View Post
Brand Model and Size of tire:
Maxxis M8008 ST225/75 R15 10ply.......
Load Range: "E"

Air pressure typically run a:
75 to 80 psi

Max pressure:
80 psi.......
Did you need to purchase special wheels/rims to handle the 75 - 80 psi pressure?
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Old 07-18-2012, 07:03 PM   #21
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Name: george
Trailer: FunFinder
Missouri
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Quote:
Originally Posted by RogerDat View Post
Did you need to purchase special wheels/rims to handle the 75 - 80 psi pressure?
I'm not Baron, but I'll throw in on that. Yes, the rim should be rated for the air pressure and the load ( in pounds ) for the application.
For instance, we are buying a set of these:

Sendel

....for one of the horse trailers in a 15" 80 psi rating so we can switch to LR E tires for it.
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Old 07-18-2012, 09:11 PM   #22
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Name: Rob
Trailer: Casita
Kansas
Posts: 81
Registry
Quote:
Originally Posted by RogerDat View Post
Did you need to purchase special wheels/rims to handle the 75 - 80 psi pressure?
RogerDat,

The specification for the aluminum wheel indicates max load of 2,150 lbs per wheel or 4,300 lbs load for the single axle. Could not find where it specifically defines a max psi for the wheel.

The 225/75/15 tire is listed as a common size for the wheel. The wheels have performed well for 40,000 miles.

One problem I have found is that some service station compressors can't get up to 80 psi. I have on occasion had to add air with my own slower compressor to get to 80 psi.
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